Abstract The device comprises mechanism for moving relative to one another a workpiece and a feeler point contacting the surface of the workpiece. An electromechanical transducer is mechanically connected to the feeler point for converting into electrical signals the movements of the feeler point normal to the surface of the workpiece, and is electrically connected through an amplifier to an electrical integrator for integrating such electrical signals. A device for determining the length of the relative movement of the workpiece and feeler point is connected to apparatus for determining the magnitude of the electrical signals integrated by the integrator, to vary the magnitude of the integrated signals inversely with the length of such relative movement, so that the integration determines the mean value of the profile of the surface of the workpiece independently of such length.
A surface-measuring device comprising mechanism for moving relative to one another a workpiece and a feeler point contacting the surface of the workpiece, an electromechanical transducer mechanically connected to the feeler point for converting into electrical signals the movements of the feeler point normal to the surface of the workpiece, and an electrical integrator to which the transducer is electrically connected through an amplifier, for integrating such electrical signals, wherein the improvement comprises a device for presetting the length of the relative movement of the workpiece and feeler point, and apparatus for determining the magnitude of the electrical signals integrated by the integrator, such apparatus being connected to such device by means for varying the magnitude of the integrated signals inversely with the length of such relative movement, so that the integration determines the mean value of the profile of the surface of the workpiece independently of such length.
Claim 2
Dependent Claim
149 words
A surface-measuring device comprising mechanism for moving relative to one another a workpiece and a feeler point contacting the surface of the workpiece, an electromechanical transducer mechanically connected to the feeler point for converting into electrical signals the movements of the feeler point normal to the surface of the workpiece, and an electrical integrator to which the transducer is electrically connected through an amplifier, for integrating such electrical signals, wherein the improvement comprises a device for presetting the length of the relative movement of the workpiece and feeler point, and apparatus for determining the magnitude of the electrical signals integrated by the integrator, such apparatus being connected to such device by means for varying the magnitude of the integrated signals inversely with the length of such relative movement, so that the integration determines the mean value of the profile of the surface of the workpiece independently of such length.
Claim 3
Dependent Claim
52 words
A surface-measuring device according to claim 1, comprising a ripple separator which is electrically connected between the transducer and the integrator to reduce the amplitude of the low frequencies, and which includes sensitivity-adjusting apparatus, connected to the device for presetting the length of the relative movement of the workpiece and feeler point.